N-Level Mathematics 3

Question 1

A bus travels 60 km in 1.5 hours. What is its average speed?

Accepted Answer

40 km/h

Answer

Speed = Distance ÷ Time = 60 ÷ 1.5 = 40 km/h.

Question 2

Solve: 2x + 3 = 11

Accepted Answer

x = 4

Answer

2x = 11 - 3 = 8. x = 8 ÷ 2 = 4.

Question 3

A bag has 4 red balls and 6 blue balls. What is the probability of picking a blue ball?

Accepted Answer

3/5

Answer

Total balls = 4 + 6 = 10. P(blue) = 6/10 = 3/5.

Question 4

What is the HCF of 12 and 18?

Accepted Answer

6

Answer

Factors of 12: 1, 2, 3, 4, 6, 12. Factors of 18: 1, 2, 3, 6, 9, 18. HCF = 6.

Question 5

Expand: 3(2x - 4)

Accepted Answer

6x - 12

Answer

3(2x - 4) = 3×2x - 3×4 = 6x - 12.

GCE N-Level Practice Test